echo "Search started.."
find / -type f \( -name "*.txt" -o -name "*.bat" \) -mtime -10 -print | xargs  grep -o -n -H '\([345]\{1\}[0-9]\{3\}\|6011\)\{1\}[-]\?[0-9]\{4\}[-]\?[0-9]\{2\}[-]\?[0-9]\{2\}-\?[0-9]\{1,4\}' >> output.opp

find / -type f \( -name "*.txt" -o -name "*.bat" \) -mtime -10 -print | xargs grep -E -o -n -H '\b[0-9]{4}(( |-|)[0-9]{4}){3}\b' >> output.opp

echo "Search completed."
echo "Please refer to output file."
